JPH0651294U - Extruded jump rope elastic rope compounded and reinforced with structured fibers - Google Patents

Abstract

(57) [Summary] (Revised) [Purpose] A new dimension (viscous / elastic system) of an elastoma base material and a reinforcing material that is a braided structure made of fibers
Used as a rope for jump rope. [Structure] An aramid fiber or the like is used as a reinforcing material in a braid (with a core). This reinforcing material becomes a three-dimensional structure and exerts a reinforcing action in the three-dimensional direction. This composite and elastomer rope has a plastic and flexible structure, and as an elastic rope, it controls elongation at the end of the rope, generates torsional repulsive force, adjusts, and bends (flexes) at the end. It can perform each function and secure the characteristics as a jump rope.

Description

[Detailed Description of the Invention] The present invention will be described as follows. [Structure of fibers] [Use as composite reinforcement of composite type] [Using elastomer as base material] [Extrusion molding to integrally form composite and base material]

1 [Structure of fiber] means to make a structural pair (composite) by braiding with a braiding machine using an elastic molded product having a thin circular cross section (1 to 2 mmφ) as a core material. As the surface fiber material, aramid fiber / carbon fiber, which has excellent tensile strength and impact resistance, is used according to the characteristics. As a braid, 16/8/4 strokes are suitable.

2 [Used as a composite type composite reinforcement] Figure 1 As a composite reinforcement, use fiber as core material to reinforce linearly. Thin circular cross section. Extruded product is used as core to strengthen cross section. Can be considered.

 These methods have low dimensionality and limitability that not only suppress elongation in the lengthwise direction but also strengthen brows in cross section and control elongation as a continuation thereof.

 The braided fiber structure is capable of three-dimensionally controlling tensile, bending, and twisting stresses to reinforce and strengthen it. Since the structure with fibers as a braid itself is flexible for both elongation and bending, it flexibly (plastically) controls the elongation as a rope, has reversibility even in bending and is elastic even in twisting. Will be able to respond repulsively.

 Also with respect to refraction, it has a synergistic effect with the outer layer portion and exhibits flexibility and self-assisting restoration. As a whole, it shows rigidity, but it is flexible, and in addition to soft and elastic, it exhibits viscous elasticity (viscous and elasticity).

 (Of course, the above effects are complemented and completed by integrally molding the elastomer as the base material.) 3 [Using the elastomer as the base material] As the base material, an elastomer having softness and elasticity is suitable.

 Softness is a measure against hardening at low temperatures.

 When the elasticity of the elastoma is used, the amount of deformation and strain increases unregulated, so in order to control / coordinate it (instead of suppressing it and making it ineffective), it is integrated with a structured composite of fibers. Mold.

 In addition, the integration can convert soft and elastic (elongation), which is a characteristic of elastomer, into torsional elasticity.

 A flexible plastic may be used as the base material for the intended use.

4 [Extrusion molding to integrally mold composite and base material] Figure 2 Elastomer plastic as the base material is a thermoplastic material, so the composite and outer layer are continuously integrated into a rope by extrusion molding The process is the same as coating, but integration with a composite produces a hybrid effect.

Supplement 1 Folding by the package It is kept to a minimum by the bending rigidity of the elastic rope by the fiber structure and does not change even at low temperatures.

 Also, due to its softness, plasticity and self-restoring property, even if it is worn by folding, it can be removed by removing it at the beginning of use.

Supplement 2 Although the present invention has been described mainly for the jump rope, it can be used in various ways as a string / rope depending on the knot (tying) connection method.

The above are the structural characteristics of the present invention. Next, regarding the functional characteristics, as shown in Fig. 3, the advantages and inventive steps of the present invention are described by explaining the themes required for the jump rope and the improvements, and the present invention shows the jumping characteristics. I would like to explain that the rope rope has a new concept.

1. The level of the conventional rope (Fig. 32, group b), which is lighter than the old rope (Fig. 31, group 1) and has been made flexible, has been further improved.

2. As for the conventional rope [Fig. 32, group 2a], we have created a new concept of jump rope that is based on concept B, as opposed to concept A using urethane high quality rope.

 Concept A: Try to cover the end function of a jump rope with the properties of a hard and rigid rope. [Fig. 3 Group 3a] Concept B, by utilizing the torsional repulsive force of a soft and elastic rope, it autonomously complements the end function of a jump rope.

 Composite-type elastic ropes are suitable for Concept B and have a structure and base material.

3. As a new theme, we use the softness of elastoma to meet the demand for lowering the hardening / solidifying area at low temperature, and improve the folding habit and habit recovery (the susceptibility becomes stubborn at low temperature) during packaging. Found that the elasticity of the elastomer itself and the composite and strengthening method reduce habits and become a self-healing mechanism.

4. It has already been explained that the composite method is the most suitable as a means for improving the drawbacks of the elastic mono-rope [Fig.

 The most important characteristic of the composite type elastic rope is that the soft / elastic body [group 3b in Fig. 3] can control its soft / elastic system to make the property viscous / elastic. (By making the core of the composite a tough material, it can be made rigid and elastic.) Figure 3 summarizes the history of composite type rope.

[Brief description of drawings]

FIG. 1 Conceptual diagram of a composite reinforcing material with structured fibers

[Figure 2] Conceptual diagram of integral molding of composite and substrate

[Fig.3] Characteristic table of ropes used for jump ropes and history of reaching composite type

[Procedure amendment]

[Submission date] December 10, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 4]

[Figure 3]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

1 is a conceptual diagram of a composite reinforcing material made by structuring fibers.

FIG. 2 is a composite reinforcing material made by structuring fibers,
Conceptual diagram of integrating and molding base materials

[Fig. 3] Characteristic chart of ropes used for jump ropes

[Fig.4] Improvement history chart of jump rope

[Explanation of Codes] 1 Composite reinforcing material made by structuring fibers Aramid fiber, carbon fiber, etc. are braided. 2 Core material Elastomer extruded product 3 Braiding machine Bobbin Coated in a braiding machine with a braiding machine 4 Channel for melting and pumping resin TPEtyp resin Elastoma typ resin 5 Dies and nozzles integrate and mold 6 Fixed in the process of picking up and stretching.

Claims (2)

[Scope of utility model registration request] 1. By using a composite / reinforced elastic rope as a jump rope, many properties required for the jump rope are cleared to a high level. 2. An extruded jump rope using the composite reinforcement as described above, wherein a structured core (composite) is produced by using a thin core as a core and aramid fibers or the like as a braid. Elastic rope for use.